diff -aurp -x '*.o' qt-everywhere-opensource-src-4.7.4-orig/src/declarative/qml/qdeclarativevmemetaobject.cpp qt-everywhere-opensource-src-4.7.4/src/declarative/qml/qdeclarativevmemetaobject.cpp
--- qt-everywhere-opensource-src-4.7.4-orig/src/declarative/qml/qdeclarativevmemetaobject.cpp	2011-08-23 20:02:27.000000000 +0800
+++ qt-everywhere-opensource-src-4.7.4/src/declarative/qml/qdeclarativevmemetaobject.cpp	2011-09-09 21:04:43.729681034 +0800
@@ -89,7 +89,7 @@ public:
     inline void setValue(const QScriptValue &);
 private:
     int type;
-    void *data[4]; // Large enough to hold all types
+    void *data[4] __attribute__((aligned(8))); // Large enough to hold all types
 
     inline void cleanup();
 };
diff -aurp -x '*.o' qt-everywhere-opensource-src-4.7.4-orig/src/gui/painting/qgrayraster.c qt-everywhere-opensource-src-4.7.4/src/gui/painting/qgrayraster.c
--- qt-everywhere-opensource-src-4.7.4-orig/src/gui/painting/qgrayraster.c	2011-08-23 20:02:27.000000000 +0800
+++ qt-everywhere-opensource-src-4.7.4/src/gui/painting/qgrayraster.c	2011-09-09 21:01:05.073089927 +0800
@@ -309,7 +309,7 @@
     int  conic_level;
     int  cubic_level;
 
-    qt_ft_jmp_buf  jump_buffer;
+    qt_ft_jmp_buf  jump_buffer __attribute__((aligned(8)));
 
     void*       buffer;
     long        buffer_size;
diff -aurp -x '*.o' qt-everywhere-opensource-src-4.7.4-orig/src/gui/painting/qpaintengine_raster.cpp qt-everywhere-opensource-src-4.7.4/src/gui/painting/qpaintengine_raster.cpp
--- qt-everywhere-opensource-src-4.7.4-orig/src/gui/painting/qpaintengine_raster.cpp	2011-08-23 20:02:27.000000000 +0800
+++ qt-everywhere-opensource-src-4.7.4/src/gui/painting/qpaintengine_raster.cpp	2011-09-09 21:02:40.261241336 +0800
@@ -4217,7 +4217,12 @@ void QRasterPaintEnginePrivate::rasteriz
         // 16-byte alignment, hence we hardcode this requirement here..
         (unsigned char *) _aligned_malloc(rasterPoolSize, sizeof(void*) * 2);
 #else
-    unsigned char rasterPoolOnStack[rasterPoolInitialSize];
+    // setjmp & longjmp in qgrayraster.c requires 8-byte alignement for float
+    // point operation, so set the size of rasterPoolOnStack a little bigger
+    // than rasterPoolInitialSize to make rasterPoolBase 8-byte alignment
+    unsigned char rasterPoolOnStackUnalign[rasterPoolInitialSize+sizeof(double)];
+    unsigned char *rasterPoolOnStack;
+    rasterPoolOnStack = (unsigned char *)(((unsigned long)rasterPoolOnStackUnalign + sizeof(double) - 1) & ~(sizeof(double)-1));
     rasterPoolBase = rasterPoolOnStack;
 #endif
     Q_CHECK_PTR(rasterPoolBase);
diff -aurp -x '*.o' qt-everywhere-opensource-src-4.7.4-orig/src/script/bridge/qscriptdeclarativeclass_p.h qt-everywhere-opensource-src-4.7.4/src/script/bridge/qscriptdeclarativeclass_p.h
--- qt-everywhere-opensource-src-4.7.4-orig/src/script/bridge/qscriptdeclarativeclass_p.h	2011-08-23 20:02:27.000000000 +0800
+++ qt-everywhere-opensource-src-4.7.4/src/script/bridge/qscriptdeclarativeclass_p.h	2011-09-09 21:03:12.053591160 +0800
@@ -72,7 +72,7 @@ public:
 
         QScriptValue toScriptValue(QScriptEngine *) const;
     private:
-        char dummy[8];
+        char dummy[8] __attribute__((aligned(8)));
     };
 
     typedef void* Identifier;